Options to re-enable WOL and start a full shell

Adding ethtool - to allows chaning WOL settings - does not add much more
dependencies compared to the core ones (network, dropbear, cryptsetup).

Refactor script for easier maintenance.

v1.0-1

README.md

@@ -1,4 +1,4 @@
-Personal ArchLinux package combining dropbear and cryptsetup in initrd for unlocking LUKS-encrypted devices either locally (boot console) or remotely over SSH.  
+Personal ArchLinux package combining dropbear and cryptsetup in initramfs for unlocking LUKS-encrypted devices either locally (boot console) or remotely over SSH.  
 The code was reworked from legacy dropbear_initrd_encrypt AUR package.
 
 
@@ -37,33 +37,43 @@ As explained upon installation, the following things need to be done:
 The LUKS-encrypted devices to unlock are derived from `/etc/crypttab`.
 
 
-Some options can be set in `/etc/initcpio/sshcs_env` (file is sourced in initrd shell):
+Some options can be set in `/etc/initcpio/sshcs_env` (file is sourced in initramfs shell):
    * `sshcs_opt_debug`: whether to be more verbose about ongoing actions
-      - default: 0
+      - default: `0`
       - any non-zero value to enable
+   * `sshcs_opt_net_wol`: Wake-on-LAN option to set on network device
+      - default: `g` (MagicPacket™)
+      - usually WOL is disabled once in initramfs shell
+      - set empty to not change network device WOL setting
    * `sshcs_opt_timeout_ipconfig`: time (in seconds) to configure IP
-      - default: 10 seconds
+      - default: `10`
    * `sshcs_opt_listen`: SSH listening port
-      - default: 22
+      - default: `22`
    * `sshcs_opt_timeout_poweroff`: time (in seconds) to unlock devices before automatic powering off
-      - default (and minimum value): 2 minutes
+      - default (and minimum value): `120` (2 minutes)
       - negative value to deactivate
+   * `sshcs_opt_use_shell`: whether to start a full `ash` shell
+      - default: `0`
+      - `1` to enable
+      - when disabled (the default), a script to unlock devices is executed instead
 
 For example:
 
     sshcs_opt_timeout_ipconfig=30
     sshcs_opt_listen=2222
     sshcs_opt_timeout_poweroff=-1
+    sshcs_opt_use_shell=1
 
 
 ## Building notes
 1. Modify the sources (features in `src`, and/or package building files)
 2. If `src` was modified
-   * archive the `src` folder in `$pkgname-$pkgver.tar.xz` file; e.g.: `tar -cJf initrd-ssh-cryptsetup-0.9.tar.xz src`
+   * bump `pkgver` in `PKGBUILD`
+   * archive the `src` folder in `$pkgname-$pkgver.tar.xz` file; e.g.: `tar -cJf initrd-ssh-cryptsetup-$(grep "^pkgver=" PKGBUILD | cut -d'=' -f2).tar.xz src`
    * upload the archive on the online repository (pointed by `PKGBUILD`)
 3. Update ChangeLog
 4. Update `PKGBUILD`
-   * bump `pkgver` if `src` was modified, or `pkgrel` if building files were modified
+   * bump `pkgrel` if only building files were modified
    * refresh `sha256sums` with `updpkgsums` if necessary
      - or manually, based on `sha256sum initrd-ssh-cryptsetup-*.tar.xz initrd-ssh-cryptsetup.install` output
 5. Delete generated archive file if any